ATM / Gear / Telescope

Trixie rebuild, day 4 – starting to take shape

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With the new “rake” and “splay” angles calculated, I cut out a 30°rotation jig, and was able to bang out another prototype when I got home. I should have spent a couple […]

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ATM / Gear / Telescope

Trixie rebuild 2011, day 3a – minor math error

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I just realized that I need to account for another dimension when constructing the pole seats; that is, they need to be “splayed” to the sides to reach the opposing corners of […]

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ATM / Gear / Telescope

Trixie 2011 rebuild, day 3 – prototype shows promise

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I spent some time today figuring out what would be necessary to create the pole seats. I landed on the “dual seat, split lengthwise, horizontal through-bolt to clamp” style (as opposed to […]

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ATM / Gear / Telescope

Trixie 2011 rebuild, day 2 – testing pole seats

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I learned how to set up the drill press for beveled cuts. I need to remember to add sacrificial pieces under the work when doing bevels. Lessons learned. The nice thing is […]

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ATM / Telescope

Trixie Rebuild 2011 – a new start

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Trixie has been sitting in the corner of the observatory, gathering dust, for almost 3 years. I first built the scope up during the spring and summer of 2008, but the scope […]

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Gear / General / Maintenance / Mount

NJP repair update

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It’s the waiting that gets you. The RA axis has been received in Japan. No further update on price or ETA yet. It’s been really clear out lately. sigh.

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Techniques

Polar Alignment Calculations

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Here’s a page that derives Polar Alignment Calculations. (update 5/2020: the original site is gone, so I found the text on Wayback and am inserting it below. This is by the original […]

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Gear / Observatory / Telescope

Special Guest Star takes the mount at Hilltop O

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The Astro Jedi needed somewhere to store his light sab—- I mean, bucket, and I was only too happy to accommodate him. I have decided that I need to come to a […]

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General / Maintenance / Observatory

Dome shutter is motorized again!

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I finally decided to bite the bullet and fix the shutter motor. Things went sideways last winter, and I’ve been opening the shutter manually (and tying it shut with rope, so we […]

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ATM

Trixie 2017 – tube mods

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I finally got around to cutting the MTA-UTA tubes to length; the only eyepiece that would come to focus with the focuser spacer in place is the Televue 55mm Plossl. If I […]

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